Since this is a paid software and addon, there isn’t much we can do. Do you have any errors in the console/terminal? This should tell you what’s happening. If anything, you should probably contact the developer of plasticity at their github directly and report there. You will have to join their server if you have paid, then report there.
https://github.com/nkallen/plasticity
I assume the addon may be looking for the blender.exe anbut we bforaritsts is a bforartists.exe – or you may need to configure the addon, or see if the console is spamming some kind of error.
:dance: